Development strategy for high specific energy density solid lithium ion battery based on oxide solid electrolyte
To meet the demand for high energy density and high safety in rapidly developing energy storage devices,the development of high specific energy density solid-state lithium-ion batteries has become a current research hotspot.Oxide solid-state electrolytes are considered one of the most promising solid-state electrolytes for the preparation of high specific energy lithium-ion batteries due to their high ion conductivity,wide voltage window,and great stability.To further enhance the energy density of oxide solid electrolyte based solid-state lithium-ion batteries,it is necessary to simultaneously reduce the thickness of oxide solid electrolyte and develop high-voltage and high-capacity cathode and anode materials.This article elaborates on the main challenges faced by thin oxide solid electrolytes and summarizes the latest progress in the manufacturing of thin oxide electrolytes from three aspects:vacuum thin film processing technology,wet chemical synthesis technology,and composite electrolyte strategy.In terms of electrode materials,this section provides a comprehensive overview of the current research landscape pertaining to high specific energy density solid-state lithium battery cathodes and anodes.It encapsulates important achievements in recent years,addressing the key challenges(the development of cathode and anode materials with high voltage,high specific capacity,and high lithiation/delithiation po-tential)confronted by these materials.Finally,this section summarised the advanced technologies and improvement strategies inherent in the aforementioned research outcomes,while also forecasting research directions for future investigations.
Solid-state lithium batteryHigh energy densitySolid electrolyteOxideMaterial design
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